from matplotlib import pyplot as plt

x=[22,22,23,24,25,25,26,27,28,29,
   30,30,32,32,32,33,34,34,35,36,
   37,38,38,39,40,42,43,43,45,45,
   46,48,48,48,50,52,56,57,60,62]
y=[176,186,164,177,183,194,180,179,190,170,
   168,192,173,178,181,186,177,187,180,195,
   179,186,187,190,182,184,176,178,164,185,
   181,175,173,172,172,169,168,182,188,174]
z=[70,220,50,170,210,270,150,150,360,150,
   150,200,150,170,170,160,180,460,480,480,
   490,300,300,250,300,250,350,180,100,250,
   160,170,160,180,150,150,130,180,100,160]
plt.scatter(x,y,s=z,alpha=0.8)
plt.show()
